WO2018164809A1 - Procédé et appareil pour rapport de marge de puissance de liaison montante - Google Patents

Procédé et appareil pour rapport de marge de puissance de liaison montante Download PDF

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Publication number
WO2018164809A1
WO2018164809A1 PCT/US2018/017851 US2018017851W WO2018164809A1 WO 2018164809 A1 WO2018164809 A1 WO 2018164809A1 US 2018017851 W US2018017851 W US 2018017851W WO 2018164809 A1 WO2018164809 A1 WO 2018164809A1
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WO
WIPO (PCT)
Prior art keywords
time interval
phr
report configuration
report
control information
Prior art date
Application number
PCT/US2018/017851
Other languages
English (en)
Inventor
Seyong PARK
Amir Aminzadeh Gohari
Renqiu Wang
Yi Huang
Hao Xu
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to EP18707514.8A priority Critical patent/EP3593570B1/fr
Priority to CN202010842295.2A priority patent/CN111970758B/zh
Priority to CN201880016499.1A priority patent/CN110383908B/zh
Publication of WO2018164809A1 publication Critical patent/WO2018164809A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power

Definitions

  • Certain embodiments can enable and provide improved communication techniques allowing user equipment devices (UEs) to generate and transmit PHR reports to base stations for uplink power control and can be utilized in scenarios where low latency may be desired for communications.
  • UEs user equipment devices
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power).
  • multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division multiple access (OFDMA) systems, (e.g., a Long Term Evolution (LTE) system).
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • a wireless multiple-access communications system may include a number of base stations (BSs), each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE).
  • UE user equipment
  • Each UE can communicate with one or more BSs via transmissions on forward and reverse links.
  • the forward link or downlink (DL) refers to the communication link from BSs to UEs
  • the reverse link or uplink (UL) refers to the communication link from UEs to BSs.
  • SNRs signal-to-noise ratios
  • UEs can report transmit power information to BSs to enable the BSs to schedule according to the transmit power information. Accordingly, improved procedures for UEs to report transmit power information may be desirable.
  • Embodiments of the present disclosure provide mechanisms for reducing control report latency.
  • a user equipment may report PHR based on a report configuration received from a base station (BS).
  • the report configuration may include a reference PHR report configuration indicating at least a predetermined waveform type.
  • the report configuration may indicate a delayed PHR report configuration, in which a UE may report a delayed PHR based on scheduling information received for a previous frame.
  • a method of wireless communication includes receiving, by a wireless communication device from a first link in a first time interval, first control information associated with a second link and the first time interval; transmitting, by the wireless communication device via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and receiving, by the wireless
  • a method of wireless communication includes transmitting, by a wireless communication device via a first link in a first time interval, first control information associated with a second link and the first time interval; receiving, by the wireless communication device via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information, the report configuration associated with a waveform type; and transmitting, by the wireless communication device via the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • an apparatus includes means for receiving, from a first link in a first time interval, first control information associated with a second link and the first time interval; transmit, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information, the report configuration associated with a waveform type; and means for receiving, from the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • an apparatus includes means for transmitting, via a first link in a first time interval, first control information associated with a second link and the first time interval; receive, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information, the report configuration associated with a waveform type; and means for transmitting, via the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • FIG. 1 illustrates a wireless communication network according to some embodiments of the present disclosure.
  • FIG. 2 illustrates a low-latency subframe configuration according to some embodiments of the present disclosure.
  • FIG. 3 is a block diagram of an exemplary user equipment (UE) according to some embodiments of the present disclosure.
  • FIG. 4 is a block diagram of an exemplary base station (BS) according to some embodiments of the present disclosure.
  • FIG. 5 is a signaling diagram of a closed-loop uplink (UL) power control method according to some embodiments of the present disclosure.
  • FIG. 6 illustrates a low-latency UL power control reporting according to some embodiments of the present disclosure.
  • FIG. 7 illustrates a low-latency n UL power control reporting according to some embodiments of the present disclosure.
  • FIG. 8 is a flow diagram of a low-latency UL power control method according to some embodiments of the present disclosure.
  • FIG. 9 is a flow diagram of a low-latency UL power control method according to some embodiments of the present disclosure.
  • CDMA code-division multiple access
  • TDMA time-division multiple access
  • FDMA frequency-division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • SC-FDMA single-carrier FDMA
  • a CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc.
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • cdma2000 covers IS- 2000, IS-95 and IS-856 standards.
  • a TDMA network may implement a radio technology such as Global System for Mobile Communications (GSM).
  • GSM Global System for Mobile Communications
  • An OFDMA network may implement a radio technology such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc.
  • E-UTRA Evolved UTRA
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • WiMAX IEEE 802.16
  • IEEE 802.20 Flash-OFDMA
  • UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS).
  • 3 GPP Long Term Evolution (LTE) and LTE- Advanced (LTE-A) are new releases of UMTS that use E- UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP).
  • CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2).
  • 3GPP2 3rd Generation Partnership Project 2
  • the techniques described herein may be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies, such as a next generation (e.g., 5 th Generation (5G) operating in mmWave bands) network.
  • 5G 5 th Generation
  • Implementations may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or OEM devices or systems incorporating one or more aspects of the described innovations.
  • devices incorporating described aspects and features may also necessarily include additional components and features for implementation and practice of claimed and described embodiments.
  • transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor(s), interleaver, adders/summers, etc.).
  • innovations described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc. of varying sizes, shapes, and constitution.
  • a BS may schedule a UE to transmit in an uplink (UL) direction during a subframe by assigning resources, a modulation coding scheme (MCS), and/or a waveform type for the UE.
  • the scheduling information may be transmitted in a DL control portion of a low-latency subframe.
  • the UE may report a transmit power headroom (PHR) to facilitate UL power control.
  • PHR transmit power headroom
  • the PHR report may be transmitted in a long UL burst portion of the low-latency subframe.
  • the UE reports PHR based on a reference PHR report configuration.
  • the reference PHR report configuration may indicate a predetermined number of RBs, a predetermined MCS, and/or a predetermined waveform type.
  • the UE computes the PHR based on the predetermined number of RBs, the predetermined MCS, and/or the predetermined waveform type.
  • the BS may determine scheduling information for a next subframe based on the received PHR report and the reference PHR report configuration.
  • the UE reports PHR based on a delayed PHR report configuration.
  • the UE computes the PHR based on scheduling information (e.g., assigned number of RBs, MCS, and/or waveform type) received in a previous subframe and transmits the PHR report in a current subframe.
  • the BS may determine scheduling information for a next subframe based on the received PHR report and the previous scheduling information. While the disclosed embodiments are described in the context of PHR computation and reporting, the disclosed embodiments can be applied to any UL control reporting that is based on DL control information or any DL control reporting that is based on UL control information.
  • PHR reports described herein can be uncoupled from being time- critical dependent on control information (e.g., downlink control information received in a current subframe).
  • FIG. 1 illustrates a wireless communication network 100 according to some embodiments of the present disclosure.
  • the network 100 includes BSs 105, UEs 115, and a core network 130.
  • the network 100 operates over a shared spectrum.
  • the shared spectrum may be unlicensed or partially licensed to one or more network operators. Access to the spectrum may be limited and may be controlled by a separate coordination entity.
  • the network 100 may be a LTE or LTE-A network.
  • the network 100 may be a millimeter wave (mmW) network, a new radio (NR) network, a 5G network, or any other successor network to LTE.
  • the network 100 may be operated by more than one network operator. Wireless resources may be partitioned and arbitrated among the different network operators for coordinated communication between the network operators over the network 100.
  • the BSs 105 may wirelessly communicate with the UEs 115 via one or more BS antennas. Each BS 105 may provide communication coverage for a respective geographic coverage area 110.
  • the term "cell" can refer to this particular geographic coverage area of a BS and/or a BS subsystem serving the coverage area, depending on the context in which the term is used.
  • a BS 105 may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or other types of cell.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a pico cell may generally cover a relatively smaller geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a femto cell may also generally cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access by UEs having an association with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in the home, and the like).
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • the BSs 105a, 105b and 105c are examples of macro BSs for the coverage areas 110a, 110b and 110c, respectively.
  • the BSs 105d is an example of a pico BS or a femto BS for the coverage area 1 lOd.
  • a BS 105 may support one or multiple (e.g., two, three, four, and the like) cells.
  • Communication links 125 shown in the network 100 may include uplink (UL) transmissions from a UE 115 to a BS 105, or downlink (DL) transmissions, from a BS 105 to a UE 115.
  • the UEs 115 may be dispersed throughout the network 100, and each UE 115 may be stationary or mobile.
  • a UE 115 may also be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.
  • a UE 115 may also be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, an entertainment device, medical device, industrial equipment, a tablet computer, a laptop computer, a cordless phone, a personal electronic device, a handheld device, a personal computer, a wireless local loop (WLL) station, an Internet of things (IoT) device, an Internet of Everything (IoE) device, a machine type communication (MTC) device, an appliance, an automobile, actuator/sensors, or the like.
  • PDA personal digital assistant
  • WLL wireless local loop
  • IoT Internet of things
  • IoE Internet of Everything
  • MTC machine type communication
  • UEs may be shaped and sized in various manners and include an external housing configured to carry a number of internal components (such as circuits/processors for implementation of the various described innovations).
  • the BSs 105 may communicate with the core network 130 and with one another.
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • IP Internet Protocol
  • At least some of the BSs 105 e.g., which may be an example of an evolved NodeB (eNB) or an access node controller (ANC)
  • eNB evolved NodeB
  • ANC access node controller
  • backhaul links 132 e.g., SI, S2, etc.
  • the BSs 105 may communicate, either directly or indirectly (e.g., through core network 130), with each other over backhaul links 134 (e.g., XI, X2, etc.), which may be wired or wireless communication links.
  • backhaul links 134 e.g., XI, X2, etc.
  • Each BS 105 may also communicate with a number of UEs 115 through a number of other BSs 105, where the BS 105 may be an example of a smart radio head.
  • various functions of each BS 105 may be distributed across various BSs 105 (e.g., radio heads and access network controllers) or consolidated into a single BS 105.
  • the network 100 utilizes orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the UL.
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, or the like.
  • K orthogonal subcarriers
  • Each subcarrier may be modulated with data.
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system bandwidth.
  • the system bandwidth may also be partitioned into subbands.
  • the BSs 105 can assign or schedule transmission resources (e.g., in the form of time-frequency resource blocks) for DL and UL transmissions in the network 100.
  • DL refers to the transmission direction from a BS 105 to a UE 115
  • UL refers to the transmission direction from a UE 115 to a BS 105.
  • the communication can be in the form of radio frames.
  • a radio frame may be divided into a plurality of subframes, for example, about 10.
  • Each subframe can be divided into slots, for example, about 2.
  • FDD frequency-division duplexing
  • each subframe includes a UL subframe in a UL frequency band and a DL subframe in a DL frequency band.
  • TDD time-division duplexing
  • UL and DL transmissions occur at different time periods using the same frequency band.
  • a subset of the subframes (e.g., DL subframes) in a radio frame may be used for DL transmissions and another subset of the subframes (e.g., UL subframes) in the radio frame may be used for UL transmissions.
  • each DL or UL subframe may have pre-defined regions for transmissions of reference signals, control information, and data.
  • Reference signals are predetermined signals that facilitate the communications between the BSs 105 and the UEs 115.
  • a reference signal can have a particular pilot pattern or structure, where pilot tones may span across an operational bandwidth or frequency band, each positioned at a pre-defined time and a pre-defined frequency.
  • a BS 105 may transmit cell-specific reference signals (CRSs) and/or channel state information -reference signals (CSI-RSs) to enable a UE 115 to estimate a DL channel.
  • CRSs cell-specific reference signals
  • CSI-RSs channel state information -reference signals
  • a UE 115 may transmit sounding reference signals (SRSs) to enable a BS 105 to estimate a UL channel.
  • Control information may include resource assignments and protocol controls.
  • Data may include protocol data and/or operational data.
  • the BSs 105 and the UEs 115 may communicate using self-contained subframes.
  • a self-contained subframe may include a portion for DL communication and a portion for UL communication.
  • a self-contained subframe can be DL-centric or UL-centric.
  • a DL-centric subframe may include a longer duration for DL communication than UL communication.
  • a UL-centric subframe may include a longer duration for UL
  • a UE 115 attempting to access the network 100 may perform an initial cell search by detecting a primary synchronization signal (PSS) from a BS 105.
  • PSS primary synchronization signal
  • the UE 115 may then receive a secondary synchronization signal (SSS).
  • the SSS may enable radio frame synchronization, and may provide a cell identity value, which may be combined with the physical layer identity value to identify the cell.
  • the SSS may also enable detection of a duplexing mode and a cyclic prefix length.
  • Some systems, such as TDD systems may transmit an SSS but not a PSS. Both the PSS and the SSS may be located in a central portion of a carrier, respectively.
  • the UE 115 may receive a master information block (MIB), which may be transmitted in the physical broadcast channel (PBCH).
  • the MIB may contain system bandwidth information, a system frame number (SFN), and a Physical Hybrid- ARQ Indicator Channel (PHICH) configuration.
  • SIBs system information blocks
  • SIB1 may contain cell access parameters and scheduling information for other SIBs. Decoding SIB 1 may enable the UE 115 to receive SIB2.
  • SIB2 may contain radio resource configuration (RRC) configuration information related to random access channel (RACH) procedures, paging, physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), power control, SRS, and cell barring.
  • RRC radio resource configuration
  • the UE 115 can perform random access procedures to establish a connection with the BS 105.
  • the UE 115 and the BS 105 can enter a normal operation stage, where operational data may be exchanged.
  • FIG. 2 illustrates a low-latency subframe configuration 200 according to some embodiments of the present disclosure.
  • the configuration 200 may be employed by the BSs 105 and the UEs 115 for transmission.
  • the x-axis represents time in some constant units and the y-axis represents frequency in some constant units.
  • the configuration 200 shows two self-contained subframes 210 and 220.
  • the subframes 210 and 220 can be configured for UL transmission and/or DL transmission.
  • the subframe 210 may be referred to as a UL-centric subframe.
  • the subframe 210 includes a DL control portion 212 for carrying DL control, a long UL burst portion 214 for carrying UL data and/or UL control, and a short UL burst portion 216 for carrying UL data and/or UL control.
  • the subframe 220 may be referred to as a DL-centric subframe.
  • the subframe 220 includes a DL control portion 222 for carrying DL control, a DL burst portion 224 for carrying DL data, and a short UL burst portion 226 for carrying UL data and/or UL control.
  • the DL control portions 212 and 222 may carry signals for a physical downlink control channel (PDCCH).
  • the DL burst portion 224 may carry signals for a physical downlink shared data channel (PDSCH).
  • the long UL burst portion 214 and the short UL burst portions 216 and 226 may carry signals for a physical uplink shared data channel (PDSCH) and/or a physical uplink control channel (PUCCH).
  • PDSCH physical uplink shared data channel
  • PUCCH physical uplink control channel
  • the subframe 210 further includes a guard interval 218 between the DL control portion 212 and the long UL burst portion 214.
  • the subframe 220 further includes s a guard interval 228 between the DL burst portion 224 and the short UL burst portion 226.
  • the guard intervals 218 and 228 allow for switching between transmit and receive.
  • the self-contained subframes 210 and 220 may have a short duration, for example, about 0.25 milliseconds (ms). The inclusion of both UL and DL portions within a subframe can improve latency and allow for fast feedback.
  • FIG. 3 is a block diagram of an exemplary UE 300 according to some embodiments of the present disclosure.
  • the UE 300 may be a UE 115 as discussed above.
  • the UE 300 may include a processor 302, a memory 304, a control information and report processing module 308, a transceiver 310 including a modem subsystem 312 and a radio frequency (RF) unit 314, and an antenna 316.
  • RF radio frequency
  • the processor 302 may include a central processing unit (CPU), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
  • the processor 302 may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the memory 304 may include a cache memory (e.g., a cache memory of the processor 302), random access memory (RAM), magnetoresistive RAM (MRAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), flash memory, solid state memory device, hard disk drives, other forms of volatile and non-volatile memory, or a combination of different types of memory.
  • the memory 304 includes a non-transitory computer-readable medium.
  • the memory 304 may store instructions 306.
  • the instructions 306 may include instructions that, when executed by the processor 302, cause the processor 302 to perform the operations described herein with reference to the UEs 115 in connection with embodiments of the present disclosure. Instructions 306 may also be referred to as code.
  • the terms "instructions” and “code” should be interpreted broadly to include any type of computer-readable statement(s). For example, the terms “instructions” and “code” may refer to one or more programs, routines, subroutines, functions, procedures, etc. "Instructions" and “code” may include a single computer- readable statement or many computer-readable statements.
  • the control information and report processing module 308 may be implemented via hardware, software, or combinations thereof.
  • the control information and report processing module 308 may be implemented as a processor, circuit, and/or instructions 306 stored in the memory 304 and executed by the processor 302.
  • the control information and report processing module 308 may be used for various aspects of the present disclosure.
  • the control information and report processing module 308 is configured to determine UL power headroom based on UL configurations (e.g., resource, MCS, waveform type, and/or maximum transmit power of the UE 300), perform UL power control, and report power headroom information, as described in greater detail herein.
  • the transceiver 310 may include the modem subsystem 312 and the RF unit 314.
  • the transceiver 310 can be configured to communicate bi-directionally with other devices, such as the BSs 105.
  • the modem subsystem 312 may be configured to modulate and/or encode the data from the memory 304 and/or the control information and report processing module 308 according to an MCS, e.g., a low-density parity check (LDPC) coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.
  • MCS low-density parity check
  • the RF unit 314 may be configured to process (e.g., perform analog to digital conversion or digital to analog conversion, etc.) modulated/encoded data from the modem subsystem 312 (on outbound transmissions) or of transmissions originating from another source such as a UE 115 or a BS 105.
  • the RF unit 314 may be further configured to perform analog beamforming in conjunction with the digital beamforming.
  • the modem subsystem 312 and the RF unit 314 may be separate devices that are coupled together at the UE 115 to enable the UE 115 to communicate with other devices.
  • the RF unit 314 may provide the modulated and/or processed data, e.g. data packets (or, more generally, data messages that may contain one or more data packets and other information), to the antenna 316 for transmission to one or more other devices. This may include, for example, transmission of control reports according to embodiments of the present disclosure.
  • the antenna 316 may further receive data messages transmitted from other devices. This may include, for example, reception of DL control information according to embodiments of the present disclosure.
  • the antenna 316 may provide the received data messages for processing and/or demodulation at the transceiver 310.
  • FIG. 3 illustrates antenna 316 as a single antenna, antenna 316 may include multiple antennas of similar or different designs in order to sustain multiple transmission links.
  • the RF unit 314 may configure the antenna 316.
  • FIG. 4 is a block diagram of an exemplary BS 400 according to some embodiments of the present disclosure.
  • the BS 400 may be a BS 105 as discussed above.
  • the BS 400 may include a processor 402, a memory 404, a control information and report processing module 408, a transceiver 410 including a modem subsystem 412 and a RF unit 414, and an antenna 416. These elements may be in direct or indirect communication with each other, for example via one or more buses.
  • the processor 402 may have various features as a specific-type processor. For example, these may include a CPU, a DSP, an ASIC, a controller, a FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
  • the processor 402 may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the memory 404 may include a cache memory (e.g., a cache memory of the processor 402), RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, a solid state memory device, one or more hard disk drives, memristor-based arrays, other forms of volatile and non-volatile memory, or a combination of different types of memory.
  • the memory 404 may include a non-transitory computer-readable medium.
  • the memory 404 may store instructions 406.
  • the instructions 406 may include instructions that, when executed by the processor 402, cause the processor 402 to perform operations described herein. Instructions 406 may also be referred to as code, which may be interpreted broadly to include any type of computer-readable statement(s) as discussed above with respect to FIG. 4.
  • the control information and report processing module 408 may be implemented via hardware, software, or combinations thereof.
  • the control information and report processing module 408 may be implemented as a processor, circuit, and/or instructions 406 stored in the memory 404 and executed by the processor 402.
  • the control information and report processing module 408 may be used for various aspects of the present disclosure.
  • the control information and report processing module 408 is configured to receive UL PHR, determine UL scheduling (e.g., resource allocation, MCS assignment, and waveform type configuration) based on the received UL PHR, and transmit UL scheduling configuration, as described in greater detail herein.
  • the transceiver 410 may include the modem subsystem 412 and the RF unit 414.
  • the transceiver 410 can be configured to communicate bi-directionally with other devices, such as the UEs 115 and/or another core network element.
  • the modem subsystem 412 may be configured to modulate and/or encode data according to a MCS, e.g., a LDPC coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.
  • the RF unit 414 may be configured to process (e.g., perform analog to digital conversion or digital to analog conversion, etc.) modulated/encoded data from the modem subsystem 412 (on outbound transmissions) or of transmissions originating from another source such as a UE 115.
  • the RF unit 414 may be further configured to perform analog beamforming in conjunction with the digital beamforming.
  • the modem subsystem 412 and the RF unit 414 may be separate devices that are coupled together at the BS 105 to enable the BS 105 to communicate with other devices.
  • the RF unit 414 may provide the modulated and/or processed data, e.g. data packets (or, more generally, data messages that may contain one or more data packets and other information), to the antenna 416 for transmission to one or more other devices. This may include, for example, transmission of information to complete attachment to a network and communication with a camped UE 115 according to embodiments of the present disclosure.
  • the antenna 416 may further receive data messages transmitted from other devices and provide the received data messages for processing and/or demodulation at the transceiver 410.
  • FIG. 4 illustrates antenna 416 as a single antenna, antenna 416 may include multiple antennas of similar or different designs in order to sustain multiple transmission links.
  • FIG. 5 is a signaling diagram of a closed-loop UL power control method 500 according to some embodiments of the present disclosure.
  • the method 500 is implemented between a BS similar to the BSs 105 and a UE similar to the UEs 115. Steps of the method 500 can be executed by computing devices (e.g., a processor, processing circuit, and/or other suitable component) of the BS and the UE.
  • computing devices e.g., a processor, processing circuit, and/or other suitable component
  • the method 500 includes a number of enumerated steps, but embodiments of the method 500 may include additional steps before, after, and in between the enumerated steps. In some embodiments, one or more of the enumerated steps may be omitted or performed in a different order.
  • the BS schedules the UE for a first data transmission and determines a first UL configuration for the first data transmission based on a previous PHR report received from the UE.
  • the details of PHR reports are described more fully below.
  • the first UL configuration may include a number of resource blocks (RBs), an MCS, and/or a waveform type assigned for the first data transmission.
  • a RB may include a group of frequency subcarriers.
  • An MCS may indicate a modulation method and a transport block size, which together determines a data rate.
  • Example modulation methods may include quadrature phase- shift keying (QPSK), 16-quadarature amplitude modulation (16-QAM), 64-quadarature amplitude modulation (64-QAM), and 256-quadarature amplitude modulation (256-QAM).
  • Example waveform types may include OFDM waveform type and discrete Fourier transform spread OFDM (DFT-s-OFDM) waveform type.
  • An OFDM waveform may have a higher peak-average-ratio (PAR) than DFT-s-OFDM waveform.
  • the BS transmits the first UL configuration to the UE, for example, in the format of a DL control information (DCI) block.
  • DCI DL control information
  • the UE performs power control based on the first UL configuration. For example, the UE may compute a first transmit power, denoted as PpuscH * f° r tne fi rst data transmission as shown below:
  • PPUSCH TM-in[Pcmax, 10 x l°d(M PUSCH (Q) + P O _PUSCH(. + [PL X «(0] +
  • P cmax represents the maximum transmit power configured for the UE, for example, according to a particular communication standard.
  • PO PUSCH represents the target power spectral density.
  • M PUSCH represents the number of assigned RBs in the first UL
  • PL represents the estimated DL path loss
  • a represents the factor to eanble or disable fractional power control or cell specific factor
  • /(i) represents the closed loop component of the power control, for example, received from a transmission power control (TCP) command.
  • TCP transmission power control
  • a TF represents a transport format-dependent compensation factor determined based on the MCS in the first UL configuration.
  • the UE After computing the first transmit power, the UE computes a first PHR as shown below:
  • PHR PCMAX ⁇ PPUSCH (2)
  • the PHR indicates an amount of remaining transmission power that the UE may use in addition to the first transmit power.
  • the UE transmits the first data transmission based on the first transmit power PPUSCH computed in equation (1).
  • the UE transmits a first PHR report indicating the first PHR, for example, in the format of a UL control information (UCI) block.
  • UCI UL control information
  • the BS schedules the UE for a second data transmission and determines a second configuration for the second data transmission based on the updated first PHR report.
  • the BS may assign a greater number of RBs, a high-order MCS for the second data transmission than the first data transmission.
  • the BS may also configure the UE to use the OFDM waveform type.
  • the BS may assign less number of RBs, a lower-order MCS, and/or a DFT-s-OFDM waveform type for the second data transmission.
  • the BS transmits the second UL configuration to the UE.
  • the UE upon receiving the second UL configuration, perform power control based on the second UL configuration using similar mechanisms as in the step 520. For example, the UE computes a second transmit power for the second data transmission based on the second UL configuration according to equation (1) and a second PHR based on the second transmit power according to equation (2).
  • the UE transmits the second data transmission based on the second transmit power.
  • the UE transmits a second PHR report indicating the second PHR.
  • the steps of 510-555 can be repeated to achieve closed- loop UL power control.
  • the processing latency for decoding the first UL configuration and computing the first transmit power and the first PHR may be substantial.
  • the method 500 is applied to low- latency subframes such as the subframes 210 and 220, there may not be a sufficient amount of time to accommodate the processing latency.
  • the BS may transmit the first UL configuration during the DL control portion 212 of the subframe 210 and the UE may be required to transmit the first data transmission and the first PHR report during the long UL burst portion 214 of the subframe 210.
  • the processing latency may be substantially greater than the guard interval 218 between the DL control portion 212 and the long UL burst portion 214. Thus, it may be difficult for the UE to meet the timing requirement of low-latency subframes.
  • FIG. 6 illustrates a low-latency UL power control reporting scheme 600 according to some embodiments of the present disclosure.
  • the scheme 600 may be employed by a BS similar to the BS 105 and a UE similar to the UEs 115.
  • the scheme 600 is suitable for use in low-latency subframes such as the subframes 210 and 220.
  • the scheme 600 may use similar mechanisms as the method 500, but the UE reports PHR based on a reference PHR report configuration.
  • the BS transmits a UL configuration 610 in the DL control portion 212 of a subframe 210.
  • the UL configuration 610 indicates a number of RBs, a MCS, and/or a waveform type assigned to the UE for transmission in the long UL burst portion 214 of the subframe 210.
  • the UE computes a transmit power and a PHR based on the reference PHR report configuration, for example, according to equations (1) and (2), respectively.
  • the reference PHR report configuration may indicate a predetermined number of RBs, a predetermined MCS, and a predetermined waveform type.
  • the UE transmits a PHR report 612 indicating the PHR in a subband 620 during the long UL burst portion 214 of the subframe 210.
  • the UL grant 612 indicates the PHR in a subband 620 during the long UL burst portion 214 of the subframe 210.
  • the configuration 610 indicates that he subband 620 is allocated to the UE.
  • the subband 620 may include a number of RBs corresponding to the number of RBs indicated in the UL configuration 610.
  • the UE may also transmit data in the subband 620 during the long UL burst portion 214 according to the UL configuration 610.
  • the reference report configuration may be predetermined and known by the BS and the UE.
  • the BS may determine a next UL configuration based on the received PHR report 612 and the reference report configuration. Since the computation of the PHR is based on the reference report configuration instead of the UL configuration 610, the UE may compute the PHR before the decoding of the UL configuration 610 is completed. As such, the UE can meet the low-latency requirement of the subframe 210.
  • FIG. 7 illustrates a low-latency UL power control reporting scheme 700 according to some embodiments of the present disclosure.
  • the scheme 700 may be employed a BS similar to the BS 105 and a UE similar to the UEs 115.
  • the scheme 700 is suitable for use in low- latency subframes such as the subframes 210 and 220.
  • the scheme 700 may use similar mechanisms as the method 500, but the UE reports delayed PHR. For example, the UE computes a PHR for a current subframe based on a UL configuration received in a previous subframe.
  • the BS transmits a first UL configuration 710 in the DL control portion 212 of a first subframe 210a.
  • the UL configuration 710 may be substantially similar to the UL configuration 610.
  • the UL configuration 710 indicates a number of RBs, a MCS, and/or a waveform type assigned to the UE for transmission in the long UL burst portion 214 of the first subframe 210a.
  • the BS transmits a second UL configuration 712 in the DL control portion 212 of a second subframe 210b.
  • the UL configuration 712 may be substantially similar to the UL configuration 710.
  • the UL configuration 712 indicates a number of RBs, a MCS, and/or a waveform type assigned to the UE for transmission in the long UL burst portion 214 of the second subframe 210b.
  • the UE computes a transmit power and a PHR based on the first UL configuration 710 received in the previous first subframe 210a, for example, according to equations (1) and (2), respectively.
  • the UE transmits a PHR report 714 indicating the PHR in a subband 720 during the long UL burst portion 214 of the second subframe 210b.
  • the UE is assigned to transmit in the subband 720 during the long UL burst portion 214 of the second subframe 210b.
  • the UE may also transmit data in the subband 720 during the long UL burst portion 214 of the second subframe 210b.
  • the BS may adjust the next UL configuration or scheduling based on the PHR report 714 and the previous first UL configuration 710. Since the computation of the PHR is based on a previously received UL configuration (e.g., the UL configuration 710) as shown by the dashed arrow, the UE may compute the PHR before the decoding of the current second UL configuration 712 is completed. As such, the UE can meet the low-latency requirement of the subframe 210.
  • the BS may schedule the UE to transmit in a short UL burst portion (e.g., the short UL burst portion 216) of a low-latency, self-contained subframe (e.g., the subframe 210).
  • the UE can compute a PHR based on a UL configuration received in a DL control portion (e.g., the DL control portion 212) of the current subframe, for example, by employing the method 500.
  • FIG. 8 is a flow diagram of a low-latency UL power control method 800 according to some embodiments of the present disclosure. Steps of the method 800 can be executed by a computing device (e.g., a processor, processing circuit, and/or other suitable component) of a wireless communication device, such as the BSs 105 and the UEs 115.
  • the method 800 may employ similar mechanisms as in the schemes 600 and 700 with respect to FIGS. 6 and 7, respectively.
  • the method 800 includes a number of enumerated steps, but embodiments of the method 800 may include additional steps before, after, and in between the enumerated steps. In some embodiments, one or more of the enumerated steps may be omitted or performed in a different order.
  • the method 800 includes receiving, from a first link (e.g., in a DL direction) in a first time interval (e.g., the subframe 210), first control information (e.g., the UL configurations 610, 710, and 712) associated with a second link (e.g., in a UL direction) and the first time interval.
  • first link e.g., in a DL direction
  • first time interval e.g., the subframe 210
  • first control information e.g., the UL configurations 610, 710, and 712
  • the method 800 includes transmitting, via the second link in the first time interval, a control report (e.g., the PHR reports 612 and 714) associated with the second link based on the report configuration that is independent from the first control information.
  • a control report e.g., the PHR reports 612 and 714
  • the report configuration is associated with a waveform type (e.g., OFDM or DFTs- OFDM) used by the wireless communication device for communication (e.g., in a UL direction).
  • the method 800 includes receiving, from the first link in a second time interval (e.g., the subframe 210) following the first time interval, second control information (e.g., the UL configurations 610, 710, and 712) that is dependent on the control report.
  • second control information e.g., the UL configurations 610, 710, and 712
  • the report configuration indicates a reference PHR report configuration as described in the scheme 600.
  • the report configuration indicates a delayed PHR report configuration as described in the scheme 700.
  • the PHR report may be generated based on control information (e.g., the UL configuration 710) received in a third time interval (e.g., the subframe 210a) prior to the first time interval (e.g., the subframe 210b).
  • FIG. 9 is a flow diagram of a low-latency UL power control method 900 according to some embodiments of the present disclosure. Steps of the method 900 can be executed by a computing device (e.g., a processor, processing circuit, and/or other suitable component) of a wireless communication device, such as the BSs 105 and the UEs 115.
  • the method 900 may employ similar mechanisms as in the schemes 600 and 700 with respect to FIGS. 6 and 7, respectively.
  • the method 900 includes a number of enumerated steps, but embodiments of the method 900 may include additional steps before, after, and in between the enumerated steps. In some embodiments, one or more of the enumerated steps may be omitted or performed in a different order.
  • the method 900 includes transmitting, via a first link (e.g., in a DL direction) in a first time interval (e.g., the subframe 210), first control information (e.g., the UL configurations 610, 710, and 712) associated with a second link (e.g., in a UL direction) and the first time interval.
  • first link e.g., in a DL direction
  • first time interval e.g., the subframe 210
  • first control information e.g., the UL configurations 610, 710, and 712
  • the method 900 includes receiving, from the second link in the first time interval, a control report (e.g., the PHR reports 612 and 714) associated with the second link based on the report configuration that is independent from the first control information.
  • the report configuration is associated with a waveform type (e.g., OFDM or DFTs- OFDM) used by the wireless communication device for communication (e.g., in a UL direction).
  • the method 900 includes transmitting, via the first link in a second time interval (e.g., the subframe 210) following first time interval, second control information (e.g., the UL configurations 610, 710, and 712) that is dependent on the control report.
  • the report configuration indicates a reference PHR report configuration as described in the scheme 600.
  • the second control information may be determined based on the reference PHR report configuration and the received control report.
  • the report configuration indicates a delayed PHR report configuration as described in the scheme 700.
  • the second control information may be determined based on control information (e.g., the UL configuration 712) transmitted in a third time interval (e.g., the subframe 210a) prior to the first time interval (e.g., the subframe 210b) and the received control report.
  • Information and signals may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g. , a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Embodiments of the present disclosure include a method of wireless communication, comprising receiving, by a wireless communication device from a first link in a first time interval, first control information associated with a second link and the first time interval; transmitting, by the wireless communication device via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and receiving, by the wireless
  • the method further includes wherein the report configuration includes a power headroom (PHR) report configuration.
  • the method further includes obtaining, by the wireless communication device, the report configuration including a power headroom (PHR) report configuration that is based on the waveform type.
  • the method further includes wherein the control report indicates a transmit PHR of the wireless communication device.
  • the method further includes configuring, by the wireless communication device, the control report to indicate a transmit PHR of the wireless communication device.
  • the PHR report configuration includes a reference PHR report configuration.
  • the method further includes wherein the obtaining includes receiving the PHR report configuration indicating a reference PHR report configuration.
  • the method further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the method further comprises determining, by the wireless communication device, the transmit PHR based on the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • the method further includes wherein the PHR report configuration includes a delayed PHR report configuration. In some instances, the method further includes wherein the obtaining includes receiving the PHR report configuration indicating a delayed PHR report configuration.
  • the method further includes receiving, by the wireless communication device in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval; and determining, by the wireless communication device, the transmit PHR based on the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the method further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • the method further includes receiving the first control information indicating at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • Embodiments of the present disclosure include a method of wireless communication, comprising transmitting, by a wireless communication device via a first link in a first time interval, first control information associated with a second link and the first time interval; receiving, by the wireless communication device via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and transmitting, by the wireless
  • the method further includes wherein the report configuration includes a power headroom (PHR) report configuration. In some instances, the method further includes configuring, by the wireless communication device, the report configuration to include a power headroom (PHR) report configuration based on the waveform type. The method further includes wherein the control report indicates a transmit PHR of the wireless communication device. In some instances, the method further includes receiving the control report indicating a transmit PHR of the wireless communication device. The method further includes wherein the PHR report configuration includes a reference PHR report configuration. In some instances, the method further includes transmitting, by the wireless communication device, the PHR report configuration indicating a reference PHR report configuration.
  • PHR power headroom
  • the method further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the method further comprises determining, by the wireless communication device, the second control information based on at least the control report and the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • the method further includes wherein the PHR report configuration includes a delayed PHR report configuration.
  • the method further includes transmitting, by the wireless communication device in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval; and determining, by the wireless communication device, the second control information based on at least the control report and the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the method further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • the method further includes configuring the first control information to indicate at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • Embodiments of the present disclosure includes an apparatus comprising a transceiver configured to receive, from a first link in a first time interval, first control information associated with a second link and the first time interval; transmit, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and receive, from the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • a transceiver configured to receive, from a first link in a first time interval, first control information associated with a second link and the first time interval; transmit, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and receive, from the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • the apparatus further includes wherein the report configuration includes a power headroom (PHR) report configuration.
  • the apparatus further includes wherein the control report indicates a transmit PHR of the apparatus.
  • the apparatus further includes wherein the PHR report configuration includes a reference PHR report configuration.
  • the apparatus further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the transceiver is further configured to determine the transmit PHR based on the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • the apparatus further includes wherein the PHR report configuration includes a delayed PHR report configuration.
  • the apparatus further includes wherein the transceiver is further configured to receive, in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval, and wherein the apparatus further comprises a processor configured to determine the transmit PHR based on the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the apparatus further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • Embodiments of the present disclosure includes an apparatus comprising a transceiver configured to transmit, via a first link in a first time interval, first control information associated with a second link and the first time interval; receive, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and transmit, via the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • the apparatus further includes wherein the report configuration includes a power headroom (PHR) report configuration.
  • the apparatus further includes wherein the control report indicates a transmit PHR of the apparatus.
  • the apparatus further includes wherein the PHR report configuration includes a reference PHR report configuration.
  • the apparatus further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the apparatus further comprises a processor configured to determine the second control information based on at least the control report and the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • RBs resource blocks
  • MCS modulation coding scheme
  • the apparatus further comprises a processor configured to determine the second control information based on at least the control report and the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • the apparatus further includes wherein the PHR report configuration includes a delayed PHR report configuration.
  • the apparatus further includes wherein the transceiver is further configured to transmit, in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval, and wherein the apparatus further comprises a processor configured to determine the second control information based on at least the control report and the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the apparatus further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • Embodiments of the present disclosure include a computer-readable medium having program code recorded thereon, the program code comprising code for causing a wireless communication device to receive, from a first link in a first time interval, first control information associated with a second link and the first time interval; code for causing the wireless communication device to transmit, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and code for causing the wireless
  • the computer-readable medium further includes wherein the report configuration includes a power headroom (PHR) report configuration.
  • the computer-readable medium further includes wherein the control report indicates a transmit PHR of the wireless communication device.
  • the computer-readable medium further includes wherein the PHR report configuration includes a reference PHR report configuration.
  • the computer-readable medium further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the program code further comprises code for causing the wireless communication device to determine the transmit PHR based on the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • the computer-readable medium further includes wherein the PHR report configuration includes a delayed PHR report configuration.
  • the computer-readable medium further includes code for causing the wireless communication device to receive, in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval; and code for causing the wireless communication device to determine the transmit PHR based on the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the computer-readable medium further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • Embodiments of the present disclosure include a computer-readable medium having program code recorded thereon, the program code comprising code for causing a wireless communication device to transmit, via a first link in a first time interval, first control information associated with a second link and the first time interval; code for causing the wireless communication device to receive, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and code for causing the wireless communication device to transmit, via the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • the computer-readable medium further includes wherein the report configuration includes a power headroom (PHR) report configuration.
  • the computer-readable medium further includes wherein the control report indicates a transmit PHR of the wireless communication device.
  • the computer-readable medium further includes wherein the PHR report configuration includes a reference PHR report configuration.
  • the computer-readable medium further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the program code further comprises code for causing the wireless communication device to determine the second control information based on at least the control report and the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • RBs resource blocks
  • MCS modulation coding scheme
  • the program code further comprises code for causing the wireless communication device to determine the second control information based on at least the control report and the at least one of a predetermined number of RBs
  • the computer-readable medium further includes wherein the PHR report configuration includes a delayed PHR report configuration.
  • the computer-readable medium further includes code for causing the wireless communication device to transmit, in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval; and code for causing the wireless communication device to determine the second control information based on at least the control report and the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the computer-readable medium further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • Embodiments of the present disclosure include an apparatus comprising means (e.g., the transceiver 310 and the antennas 316) for receiving, from a first link in a first time interval, first control information associated with a second link and the first time interval; means (e.g., the transceiver 310 and the antennas 316) for transmitting, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and means (e.g., the transceiver 310 and the antennas 316) for receiving, from the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • the apparatus further includes wherein the report configuration includes a power headroom (PHR) report configuration.
  • the apparatus further includes wherein the control report indicates a transmit PHR of the apparatus.
  • the apparatus further includes wherein the PHR report configuration includes a reference PHR report configuration.
  • the apparatus further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the apparatus further comprises means (e.g., the control information an report processing module 308) for determining the transmit PHR based on the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • RBs resource blocks
  • MCS modulation coding scheme
  • the apparatus further comprises means (e.g., the control information an report processing module 308) for determining the transmit PHR based on the at least one of a predetermined number of RBs, a predetermined MCS, or
  • the apparatus further includes wherein the PHR report configuration includes a delayed PHR report configuration.
  • the apparatus further includes means (e.g., the transceiver 310 and the antennas 316) for receiving, in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval, and wherein the apparatus further comprises means (e.g., the control information an report processing module 308) for determining the transmit PHR based on the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the apparatus further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.
  • Embodiments of the present disclosure include an apparatus comprising means (e.g., the transceiver 410 and the antennas 416) for transmitting, via a first link in a first time interval, first control information associated with a second link and the first time interval; means (e.g., the transceiver 410 and the antennas 416) for receiving, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information; and means (e.g., the transceiver 410 and the antennas 416) for transmitting, via the first link in a second time interval following the first time interval, second control information that is dependent on the control report.
  • the apparatus further includes wherein the report configuration includes a power headroom (PHR) report configuration.
  • the apparatus further includes wherein the control report indicates a transmit PHR of the apparatus.
  • the apparatus further includes wherein the PHR report configuration includes a reference PHR report configuration.
  • the apparatus further includes wherein the reference PHR report configuration indicates at least one of a predetermined number of resource blocks (RBs), a predetermined modulation coding scheme (MCS), or a predetermined waveform type, and wherein the apparatus further comprises means (e.g., the control information an report processing module 408) for determining the second control information based on at least the control report and the at least one of a predetermined number of RBs, a predetermined MCS, or a predetermined waveform type.
  • RBs resource blocks
  • MCS modulation coding scheme
  • the apparatus further comprises means (e.g., the control information an report processing module 408) for determining the second control information based on at least the control report and the at least one of a predetermined number of
  • the apparatus further includes wherein the PHR report configuration includes a delayed PHR report configuration.
  • the apparatus further includes means (e.g., the transceiver 310 and the antennas 316) for transmitting, in a third time interval prior to the first time interval, third control information indicating at least one of a number of resource blocks (RBs), a modulation coding scheme (MCS), or a waveform type for a transmission in the third time interval; and means (e.g., the control information an report processing module 408) for determining the second control information based on at least the control report and the at least one of a number of RBs, a MCS, or a waveform type for the transmission in the third time interval.
  • the apparatus further includes wherein the first control information indicates at least one of a resource allocation, a modulation coding scheme (MCS), or a waveform type for a transmission in the first time interval.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne des systèmes de communication sans fil et des procédés associés pour améliorer la latence de rapport de commande. Un dispositif de communication sans fil reçoit, depuis une première liaison dans un premier intervalle de temps, des premières informations de commande associées à une deuxième liaison et au premier intervalle de temps. Le dispositif de communication sans fil transmet, par l'intermédiaire de la deuxième liaison dans le premier intervalle de temps, un rapport de commande associé à la deuxième liaison sur la base d'une configuration de rapport qui est indépendante des premières informations de commande. La configuration de rapport est associée à un type de forme d'onde. Le dispositif de communication sans fil reçoit, depuis la première liaison dans un deuxième intervalle de temps après le premier intervalle de temps, des deuxièmes informations de commande qui dépendent du rapport de commande. La configuration de rapport comprend une configuration de rapport de marge de puissance (PHR). La configuration de rapport PHR comprend une configuration de rapport PHR de référence. La configuration de rapport PHR comprend une configuration de rapport PHR retardée.
PCT/US2018/017851 2017-03-10 2018-02-12 Procédé et appareil pour rapport de marge de puissance de liaison montante WO2018164809A1 (fr)

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EP18707514.8A EP3593570B1 (fr) 2017-03-10 2018-02-12 Procédé et appareil pour rapport de marge de puissance de liaison montante
CN202010842295.2A CN111970758B (zh) 2017-03-10 2018-02-12 用于上行功率余量报告的方法和设备
CN201880016499.1A CN110383908B (zh) 2017-03-10 2018-02-12 用于上行功率余量报告的方法和设备

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US201762470085P 2017-03-10 2017-03-10
US62/470,085 2017-03-10
US15/839,074 2017-12-12
US15/839,074 US10420044B2 (en) 2017-03-10 2017-12-12 Uplink power headroom report

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US10420044B2 (en) 2019-09-17
EP3593570A1 (fr) 2020-01-15
CN111970758B (zh) 2023-08-18
TW202119847A (zh) 2021-05-16
TWI704824B (zh) 2020-09-11
US20200053666A1 (en) 2020-02-13
US10887850B2 (en) 2021-01-05
CN110383908B (zh) 2020-09-08
EP3593570B1 (fr) 2023-07-05
CN110383908A (zh) 2019-10-25
TW201838451A (zh) 2018-10-16
US20180262998A1 (en) 2018-09-13
CN111970758A (zh) 2020-11-20
TWI759821B (zh) 2022-04-01

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